Table of Contents
Advertisement
Designer Reference Manual — USB08 Evaluation Board
Section 4. Universal Serial Bus (USB) Interface
4.1 Contents
4.2 Introduction
USB08 Evaluation Board
MOTOROLA
4.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.3
Characteristics of the USB08 Reference Design . . . . . . . . . . . 60
4.4
USB Basics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.5
USB Implementation in the Reference Design . . . . . . . . . . . . . 65
4.5.1
Activation of the USB Module. . . . . . . . . . . . . . . . . . . . . . . .65
4.5.2
Endpoint Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
4.5.3
USB Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
4.6
Device Management with Endpoint 0 . . . . . . . . . . . . . . . . . . . .69
4.6.1
Enumeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
4.6.2
Assignment of the Device Address . . . . . . . . . . . . . . . . . . .69
4.6.3
Requesting Descriptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
4.6.4
Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
4.6.5
STALL Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
4.7
Data Communication via Endpoints EP1 and EP2 . . . . . . . . . .75
4.7.1
Receiving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
4.7.2
Transmission of Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
4.8
Host Interaction: Vendor ID and Product ID . . . . . . . . . . . . . . .78
4.9
Windows Device Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
The universal serial bus (USB) is an interface for the connection of
peripheral devices, for example, printers, scanners, keyboards, and
pointing devices to a PC or a similar host.
Universal Serial Bus (USB) Interface
Designer Reference Manual
59
Advertisement
Chapters
Table of Contents
